Metal mesh touching sensing electrode assembly

• US 10,642,438 B1
• Filed: 01/07/2019
• Issued: 05/05/2020
• Est. Priority Date: 11/28/2018
• Status: Active Grant

• Current Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Ltd.
• Original Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Ltd.
• Inventors: Deng, Yichao, Dai, Qibing, Ma, Yalong
• Primary Examiner(s): Sarma, Abhishek
• Application Number:
  US16/326,214
• Publication Number:
  US 20200167039A1
• Time in Patent Office: 484 Days
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A metal mesh touching sensing electrode assembly includes a metal mesh, first electrode columns, and second electrode rows. The first electrode columns are disposed on the metal mesh. Each first electrode column includes first electrode units which are mutually connected. Each of the first electrode units includes a first outer frame, first connection patterns, and first boundary patterns. The first connection patterns include a first T-shaped portion and a first linear portion. Each second electrode row includes second electrode units which are mutually connected with each other. Each second electrode unit includes a second outer frame, second connection patterns, and second boundary patterns. Each second connection pattern includes a second T-shaped portion and a second linear portion. The first electrode units and second electrode units of the metal mesh touching sensing electrode assembly have complicated patterns to prevent a visibility issue of an unexpected visual strip effect.

Claims

1. A metal mesh touching sensing electrode assembly, comprising:

a metal mesh comprising a plurality of first metal wires and a plurality of second metal wires, the first metal wires intersecting the second metal wires perpendicularly and forming therewith a plurality of rhombus-shaped mesh eyes;

a plurality of first electrode columns disposed on the metal mesh, and each of the first electrode columns comprising a plurality of first electrode units connecting with each other, wherein each of the first electrode units is rhombus-shaped and comprises;

a first outer frame being rhombus-shaped;

a plurality of first connection patterns disposed within the first outer frame, connected to the first outer frame, and each of the first connection patterns comprising a first T-shaped portion and a first linear portion, the first T-shaped portion comprising a transverse line portion and a longitudinal line portion extending perpendicular from a center of the transverse line portion, and the first linear portion extending perpendicularly from an end of the transverse line portion of the first T-shaped portion; and

a plurality of first boundary patterns extending outwardly from the first outer frame; and

a plurality of second electrode rows disposed on the metal mesh and intersecting the first electrode columns perpendicularly, and each of the second electrode rows comprising a plurality of second electrode units connecting with each other, wherein each of the second electrode units is rhombus-shaped.

2. The metal mesh touching sensing electrode assembly as claimed in claim 1, wherein each of the first boundary patterns is cross-shaped.

3. The metal mesh touching sensing electrode assembly as claimed in claim 1, wherein a plurality of dummy electrode patterns are formed within each of the first electrode units, the dummy electrode patterns are disposed within the first outer frame and are staggered with the first connection patterns, and each of the dummy electrode patterns comprises a T-shaped section and a perpendicular section, and wherein the T-shaped section comprises a transverse line section and a longitudinal line section extending perpendicularly from a center of the transverse line section, and the perpendicular section extends perpendicularly from a distal end of the longitudinal line section.

4. The metal mesh touching sensing electrode assembly as claimed in claim 1, wherein each of the second electrode units comprises:

a second outer frame being rhombus-shaped;

a plurality of second connection patterns disposed in the second outer frame and connected to the second outer frame, each of the second connection patterns comprising a second T-shaped portion and a second linear portion, the second T-shaped portion comprising a transverse line block and a longitudinal line block extending perpendicularly from a center of the transverse line block, and the second linear portion extending perpendicularly from an end of the transverse line block of the second T-shaped portion; and

a plurality of second boundary patterns extending outwardly from the second outer frame.

5. The metal mesh touching sensing electrode assembly as claimed in claim 4, wherein each of the second boundary patterns is cross-shaped.

6. The metal mesh touching sensing electrode assembly as claimed in claim 1, wherein each of the first boundary patterns and an adjacent one of the second boundary patterns engage with each other.

7. The metal mesh touching sensing electrode assembly as claimed in claim 4, wherein each of the first boundary patterns is cross-shaped;

each of the second boundary patterns is cross-shaped; and

each of the first boundary patterns and an adjacent one of the second boundary patterns engage with each other.

8. The metal mesh touching sensing electrode assembly as claimed in claim 4, wherein the plurality of dummy electrode patterns are formed within each of the second electrode units, the dummy electrode patterns are disposed in the second outer frame and are staggered with the second connection patterns, and each of the dummy electrode patterns comprises the T-shaped section and the perpendicular section, and wherein the T-shaped section comprises the transverse line section and the longitudinal line section extending perpendicularly from a center of the transverse line section, and the perpendicular section extends perpendicularly from the distal end of the longitudinal line section.

9. The metal mesh touching sensing electrode assembly as claimed in claim 1, wherein the first electrode units are made of some of the rhombus-shaped mesh eyes, and the second electrode units are made of the others of the rhombus-shaped mesh eyes.

10. The metal mesh touching sensing electrode assembly as claimed in claim 1, wherein

two adjacent of the first electrode units of each of the first electrode columns are connected to each other through a first bridging unit;

two adjacent of the first electrode units of two adjacent of the first electrode columns are connected to each other through a second bridging unit;

two adjacent of the second electrode units of each of the second electrode rows are connected to each other directly; and

two adjacent of the second electrode units of two adjacent of the second electrode rows are connected to each other directly.

11. A metal mesh touching sensing electrode assembly, comprising:

a metal mesh comprising a plurality of first metal wires and a plurality of second metal wires, the first metal wires intersecting the second metal wires perpendicularly and forming therewith a plurality of rhombus-shaped mesh eyes;

a plurality of first electrode columns disposed on the metal mesh, and each of the first electrode columns comprising a plurality of first electrode units connecting with each other, wherein each of the first electrode units is rhombus-shaped and comprises;

a first outer frame being rhombus-shaped;

a plurality of first connection patterns disposed within the first outer frame, connected to the first outer frame, and each of the first connection patterns comprising a first T-shaped portion and a first linear portion, the first T-shaped portion comprising a transverse line portion and a longitudinal line portion extending perpendicular from a center of the transverse line portion, and the first linear portion extending perpendicularly from an end of the transverse line portion of the first T-shaped portion; and

a plurality of first boundary patterns extending outwardly from the first outer frame; and

a plurality of second electrode rows disposed on the metal mesh and intersecting the first electrode columns perpendicularly, and each of the second electrode rows comprising a plurality of second electrode units connecting with each other, wherein each of the second electrode units is rhombus-shaped;

wherein each of the first boundary patterns is cross-shaped;

wherein a plurality of dummy electrode patterns are formed within each of the first electrode units, the dummy electrode patterns are disposed within the first outer frame and are staggered with the first connection patterns, and each of the dummy electrode patterns comprises a T-shaped section and a perpendicular section, and wherein the T-shaped section comprises a transverse line section and a longitudinal line section extending perpendicularly from a center of the transverse line section, and the perpendicular section extends perpendicularly from a distal end of the longitudinal line section;

wherein each of the second electrode units comprises;

a second outer frame being rhombus-shaped;

a plurality of second connection patterns disposed in the second outer frame and connected to the second outer frame, each of the second connection patterns comprising a second T-shaped portion and a second linear portion, the second T-shaped portion comprising a transverse line block and a longitudinal line block extending perpendicularly from a center of the transverse line block, and the second linear portion extending perpendicularly from an end of the transverse line block of the second T-shaped portion; and

a plurality of second boundary patterns extending outwardly from the second outer frame.

12. The metal mesh touching sensing electrode assembly as claimed in claim 11, wherein each of the second boundary patterns is cross-shaped.

13. The metal mesh touching sensing electrode assembly as claimed in claim 11, wherein each of the first boundary patterns and an adjacent one of the second boundary patterns engage with each other.

14. The metal mesh touching sensing electrode assembly as claimed in claim 11, wherein each of the first boundary patterns is cross-shaped;

each of the second boundary patterns is cross-shaped; and

each of the first boundary patterns and an adjacent one of the second boundary patterns engage with each other.

15. The metal mesh touching sensing electrode assembly as claimed in claim 11, wherein a plurality of dummy electrode patterns are formed within each of the second electrode units, the dummy electrode patterns are disposed in the second outer frame and are staggered with the second connection patterns, and each of the dummy electrode patterns comprises a T-shaped section and a perpendicular section, and wherein the T-shaped section comprises a transverse line section and a longitudinal line section extending perpendicularly from a center of the transverse line section, and the perpendicular section extends perpendicularly from a distal end of the longitudinal line section.

16. The metal mesh touching sensing electrode assembly as claimed in claim 11, wherein the first electrode units are made of some of the rhombus-shaped mesh eyes, and the second electrode units are made of the others of the rhombus-shaped mesh eyes.

17. The metal mesh touching sensing electrode assembly as claimed in claim 11, wherein

two adjacent of the first electrode units of each of the first electrode columns are connected to each other through a first bridging unit;

two adjacent of the first electrode units respectively of two adjacent of the first electrode columns are connected to each other through a second bridging unit;

two adjacent of the second electrode units of each of the second electrode rows are connected to each other directly; and

two adjacent of the second electrode units respectively of two adjacent of the second electrode rows are connected to each other directly.